Laravel - app with 'Calendar' view & attendance of users approach - php

Question

I've got 'behavioral' problem with approach to Attendance system.
I have database like this:
Users:
- increments: id,
- string: name,
- string: email,
Attendance:
- increments: id,
- integer: user_id,
- string: type,
- date: start,
- date: end,
I want to print it in table, where thead is an iteration of days of the month(I'm using for loop and iterate through days in month), 1st column in 2nd is an User name, and rest of columns in this row are the attendance "things" like box with different color, depends of attendance type.
My question is that: what's the best approach? Store attendance like I do or 'divide' the range to single attendance and do like this:
Attendance:
- increments: id,
- integer: user_id,
- string: type,
- date: date_of_attendance.
I've got issue with displaying it (User model hasMany Attendances), and I do not have an idea how to simplify it.
Should I use 'inside model' function to retrieve the data and parse it before passing it to view like (User model):
public function filterAttendance()
{
return $this->attendance()->whereBetween('start', [Carbon::now()->firstOfMonth(), Carbon::now()->lastOfMonth()])->orWhereBetween('end', [Carbon::now()->firstOfMonth(), Carbon::now()->lastOfMonth()])->orderBy('start', 'ASC')->get();
}
In view I do foreach through all $users, then inside it foreach through all $monthDates(parsed dates to Carbon from 1st of month to last) and then I try to compare the days of attendance if they in "specific" range.
Also I want to achieve best computational complexity in this example.